<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <el-row :gutter="20">
        <!-- 搜素栏 -->
        <el-col :span="7">
            <el-input placeholder="请输入内容" v-model="queryInfo.query"
            clearable @clear="getGoodsList">
              <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
            </el-input>
        </el-col>
        <!-- 添加按钮 -->
        <el-col :span="2">
          <el-button type="primary" @click="addGoods">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index" label="#">
        </el-table-column>
        <el-table-column prop="goods_name" label="商品名称">
        </el-table-column>
        <el-table-column prop="goods_price" label="商品价格(元)" width="95">
        </el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="70">
        </el-table-column>
        <el-table-column label="创建时间" width="140">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130">
          <template slot-scope="scope">
            <!-- 编辑 -->
            <el-button type="primary" class="el-icon-edit" size="mini"></el-button>
            <!-- 删除 -->
            <el-button type="danger" class="el-icon-delete" size="mini" @click="deleteGoods(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="pageSizeChange" @current-change="pageNumChange"
      :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="10"
      layout="total, sizes, prev, pager, next, jumper" :total="total" background>
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 首次获取数据的请求体
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表数据
      goodsList: [],
      // 总数据条数
      total: ''
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 商品列表数据
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取商品列表数据失败')
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 监听页面尺寸选项变化
    pageSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听当前页码变化
    pageNumChange(newNum) {
      this.queryInfo.pagenum = newNum
      this.getGoodsList()
    },
    // 监听操作栏删除按钮
    async deleteGoods(id) {
      const result = await this.$confirm('此操作将永久删除该商品, 是否继续?', '删除商品', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 确定删除返回值为confirm
      if (result !== 'confirm') return this.$message.info('已取消删除')
      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败')
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    // 监听点击添加商品按钮
    addGoods() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
</style>
